Fireproof floor



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-I 'IRBIZROF FLOOR.

No. 524,284. A Patented Aug.. 7, 1,894.

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.-No. 524,284. Patented Aug."7, 1894.

UNITED STATES HARRY BALY PRICE, OF

PATENT OEEICE.

LONDON, ASSIGNOR TO CHARLES WHITFIELD, OF

KE'ITERING, ENGLAND. p

FlREPRooF FLOOR.

SPECIFICATION forming part of Letters Patent No. 524,284, datedAugust '7, 1894. Application filed April l1| 1893. Serial No. 469,971. (No model.) Patented in England May 24, 1892,11lo. 9,857.

To all whom, it may concern.: Be it known thatI, HARRY BALY PRICE, asubJect of the Queen of Great Britain and l Ireland, residing at ChiswellIIouse, 135 Fins- 5V bury Pavement, London, England, have invent'ed certain new and useful Improvements 1n Fireproof-Floors and other Structures, (for r which a patent has been granted in Great Britain, No. 9,857, dated May 24, 1892;) and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whlchit appertains to make and use the same. My Invention relates to improvements in fire proof floors, and other structures, and its novelty will be fully understood from the following description and claims.

Flre proof floors I construct with iron j oists and on the lower iiange of the joist I place lire vlumps which are molded to a peculiar fo 1m so that two of the lumps brought up to the Joist from opposite sides embrace the lower ange and part ot" the web of the joist, and meet together beneath the joist and about the center line. The outer sides of lthese tire lumps are inclined so that the clear space be tween the joists, after the tire lumps have been applied, is wider above than it is below. lThese spaces are filled by molded blocks of concrete which are similarly inclined at their ends. I canse the fire lumps andthe concrete blocks to key together. In each concrete block I fix one or more molded fire brick plugs preferably cylindrical with deeply rocessed ring grooves around its periphery, the whole forming a skeleton framework for the vreception of filling material. Then I filtin wlth concrete to cover the whole area over the joists and the molded concrete blocks between them. These flrebrick plugs key together the molded blocks and the unmolded concrete filling, the result beinga continuous solid structure.

To protect girders from the action of fire I employ molded fire lumps fitted to the bottom ange of the girder. Each lump extends from side to side beneath the ilange of the girder and is provided with a jaw which on one side overlaps and embraces the upper face of the 5o flange and reaches nearly to the web. These re lumps are applied to the girder alternately from oppositesides. The upper Iiange of the girder is protected by other lire lumps of inverted trough like form which cover the upper flange, the whole forming a skeleton iframework the spaces of which are filled in with loose concrete applied to the girder by the aid of a roughly formed mold so as to till in the spaces between the iire lumps at the top and bottom; thus the girdcr becomes em- 6o bedded in a casing of rectangular section formed partly of the tire lump skeleton framework and partly of the concrete filled in `between them.

Iron columns I clothe with rings of molded` iirebrick each ring being in three parts. The rings I keep separate the one from the other by upright distance pieces the ends of which abut upon the rings at the joints and at the end of eachupright are two dowels connect- 7o ing it with the ring sectionsupon which it is in contact, thus forming a skeleton framefy work around the surface of the column, the spaces between which are illed in with loose concrete so that the whole forms a continnous cylindrical casing inclosing the iron column.

In order that my invention may be fully understood and readily carried into eifect I will' proceed to describe the drawings hereunto 8o annexed. v a

Figure 1 a vertical section of a tire proof lloor in accordance with my invention. Fig. 2 is a horizontal section on the line A. B. in Fig. l.

a a are iron joists which support the floor. b b are the fire bricks or lumps which incase the lower Ilange of the jois c o are cencreteslabs extending from joist to joist across the interval between the tire 9o blocks.

d el represents concrete which is filled in y loose over the slabs c c. e e are tire brick plugs set in theslab c and serving to key to it the loose concrete d. Fig. 3 shows to a larger scale, a plan of one of the bricks b. Fig. 4 isasection ot' the same on the line C-D in Fig. 3, and Fig. 5 is a section on theline E-fF in the same figure.

I make the concrete slabs c by the aid of a roo" mold which ,receives one of the lumps hat each end and a plug or plugs e at an interslabs being such as to admit of this; it also:

allows the upper concrete d to rest directly on the anges of the joists.

the lire lumps at the end, I then firstl place the lumps I) upon the joists and afterward drop in the concrete slab making good withy cement the joint fire lump. The fireproof floor is easily laid, thoroughly protects the joists and Athe `parts are secure fromdisplacement.

Fig. 6 is a. transverse section of a girder protected by means of fire blocks and concretein accordance with my invention. Fig.

7 showsa side elevation, and Fig. 8 is a seo-` tional plan of the same.

Fig. 9 is `a longitudinal section of one of the fire blocks which protect the lower flange of the girder, and Fig. 10 is an end elevation of the same.

The fire blocks are molded to lit the lianges of the girder and with grobves or recesses to receive the rivet heads. plied to the lower flan ge alternately from opposite sides,a rough mold is built around the girder and concrete is filled in,thenthe blocks at the top are put into their places. Thus the vgirder is completely incasedin fire proof material which is very firmly attached by the jaws of the lower blocks overlapping the flange of the girder, by the lateralinterlockingV of these blocks as the drawings show, and by the overlapping flanges or sides of the upperblocks.

Fig. 11 is asectional elevation of a column provided with a Iirefproof protecting casing in accordance with my invention. Fig. 12 is .a horizontal section of the same on the line drawings indicate three lumps in each ring;

but this may be varied.

Where there is` not space to slew the slab I mold it without` The blocks are-apg g are other relumps which keep'the rings apart, they are yplaced under the joints of the 'rings and they are provided with projections or dowels at their ends which enter corresponding recessesin the lumpsj". The casing is applied by the aid of a short cylindrical wooden or sheet metal casing formed around the column; one of the framework rings is laid within the casing and the upright blocks g are erected in their places, then concrete is filled in about the column to the top of the upright blocks and allowed to set. Afterward another ring of re lumps is laid, the'oasing is shifted upward on the column and the work is proceeded with as before.` In a column thus protected the framework of` the fire lumps serves to secure the concrete to the column and prevent it separating and falling away when exposed to great heat.

What Iclaim, and desirto secure by Letl. `A fire proof Hoor or other structure com'- `prising slabs as c, of fire proof` material, a covering of concrete arranged on Lthe slabs, and ireproof plugs connected to the slabs and adapted to key the concrete covering thereto, substantially as and for thepurpose set forth.

2. A iireproof floor, comprising lmetal joists for supportingthe floor, fire-lumps incasing the lower flanges of the joists, concrete slabs extending between vthe fire lumps,concrete laid on-the slabs and illingthe spacebetween the joists, and rebrickplugs molded inthe slab and keying them .to the concrete covering, all substantially as described.

3. In a fire proof structure, the combination with girders, joists, or the likehavinganges at their lower edges, of fire lumps, each with a jaw at one end, applied oppositely one to the flange of one girder, and another tothe flange of the next girder, the j awsfra'ngingdiagonally to each other, anda concretefilling arranged against the sides ofthe girders,sub stantially as described.

In testimony whereof I haveafxed my signature in presence of two witnesses.

HARRY BALY PRICE.

Witnesses: Y

W. I-I. WHEATLEY, THoMAsLAKE. 

